Therefore, in recent years, several methods [1]}, [2]}, [3]}, [4]} have been proposed to detect OOD samples.
Commonly, the OOD detector converts the output of a model to an ID probability.
For example, Max. Probability [2]} uses the highest class probability as ID probability.
Another approach, proposed by Lee et al. [6]} models OOD based on the the smallest Mahalanobis distance between the input and a class conditional Gaussian distribution in the latent space.
